Conclusion

Wow. You've made it. You've reached the end of the very last chapter of Type-Level TypeScript.

As you can imagine, this is not the end of your TypeScript journey. There's so much more to explore, so much more to invent, and you now have all the knowledge and experience to go on your own adventure!

You are fluent in the two languages of TypeScript — the languages of values and types.

Unlike most developers, you know how to use types just like any other programming language.

You know how to catch errors at compile-time rather than at runtime.

You know how to orchestrate advanced TypeScript features to design great abstractions that nudge developers toward writing code that survives the passage of time.

You also understand that type-safety sometimes comes at a cost. You know when it is worth it, and when it isn't.

But there's so much more to learn! TypeScript is a rich, ever-evolving language and the community is extremely innovative. I've been using it for years and I still learn about new patterns, techniques, and ideas every day. Now it's your turn to help shape the future of the ecosystem! 🤗

Keep experimenting 🔭

The next time you look at some piece of code, pause and look for implicit assumptions.